Geometric Sequence and Series

In the geometric sequence 2, 6, 18, n, 162, ..., what is the value of n?

• 54

• 90

• 24

• 36

Tags

CCSS.HSF.BF.A.2

Is the sequence -432, 72, -12, 2,...geometric?

• yes

• no

Tags

CCSS.HSF.BF.A.2

This image shows how a certain bacteria grows in a petri dish. What is the common ratio of this sequence?

• 4

• 3

• 2

• 6

Tags

CCSS.HSF.BF.A.2

What is the common ratio for the following sequence:

3, 15, 75, 375, ...

• 12

• 1/5

• 5

• 3

Tags

CCSS.HSF.BF.A.2

Tags

CCSS.HSF.BF.A.2

which sequence has a common ratio of -2?

• 4, 8, 16, 32

• 4, -8, 16, -32

• 32, 16, 8, 4

• -32, 16, -8, 4

Tags

CCSS.HSF.BF.A.2

What is the next term in the sequence: 7,28,112,448,_?

• 1279

• 7192

• 1972

• 1792

Tags

CCSS.HSF.BF.A.2

Is the sequence 9, 99, 999, 9999,... geometric?

• no

• yes

Tags

CCSS.HSF.BF.A.2

What does r represent?

• Radical

• Common difference

• Common ratio

Tags

CCSS.HSF.BF.A.2

Find the sum of the geometric series.

2 + 12 + 72 + 432

• 432

• 518

• 211

• 438

Tags

CCSS.HSA.SSE.B.4